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Hamtolenus vincenti

Class: Trilobita; Order: Ptychopariida; Family: Ellipsocephalidae

Lower to Middle Cambrian border

Jbel Wawrmast Formation, Cephalopyge notabilis zone

Jbel Ougnat, south of Tinjdad, Morocco

size of fossil is 4.7cm or 1.9″ head to tail